The southernmost flight route with plausible airports would be between Buenos Aires and Perth.[30] With a 175° (S) heading, the route's great circle exceeds 85° S and would be within 310 miles (500 km) from the South Pole. Currently, no commercial airliners operates this 6,800-nautical-mile (7,800 mi; 12,600 km) route. However, in February, 2018, it was stated that Norwegian Air Argentina is considering this "less than 15 hours" trans-polar flight between South America and Asia, with a stop-over in Perth enroute Singapore.[31] They will not fly over the South Pole, but around Antarctica taking advantage of the strong winds which circle that continent in an easterly direction. Hence, the "westbound" flight from Buenos Aires would actually travel south-east south of Cape Town, over the southern Indian Ocean and on to Perth, while the true "eastbound" flight would also head south-east south of Tasmania and New Zealand, over the South Pacific and on to South America. If this route becomes operational, a Buenos Aires - Singapore return flight would possibly be the fastest circumnavigation available with commercial airliners, although Perth - Buenos Aires return would be faster but without passing the Equator.